Isotoma viridis


    Identification is difficult due to similar species. Colour is highly variable, from yellow to almost black (possibly becoming darker with age). The distinguishing feature is a single pair of 'teeth' on the thickened apical edge of the manubrium as illustrated.

    - Ocelli C-D-E aligned (=  genus Isotoma)
    - One pair of manubrial teeth.

    Identification difficulty
    Recording advice

    Confirmation requires microscopic proof of presence of one pair of manubrial teeth. 


    Moist habitats, under stones and logs, in leaf litter and moss etc.

    When to see it

    All year round.

    UK Status

    Widespread and fairly frequent in Britain.

    VC55 Status

    Status in Leicestershire and Rutland not known.

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    Leicestershire & Rutland Map

    MAP KEY:

    Yellow squares = NBN records (all known data)
    Coloured circles = NatureSpot records: 2020+ | 2015-2019 | pre-2015

    UK Map